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【Java】校正身份证

作者:Hsingmin / 发布于2015/9/14/ 427


	class IDCardUtil {
	 final static Map<Integer, String> zoneNum = new HashMap<Integer, String>();
	 static {
	 zoneNum.put(11, "北京");
	 zoneNum.put(12, "天津");
	 zoneNum.put(13, "河北");
	 zoneNum.put(14, "山西");
	 zoneNum.put(15, "内蒙古");
	 zoneNum.put(21, "辽宁");
	 zoneNum.put(22, "吉林");
	 zoneNum.put(23, "黑龙江");
	 zoneNum.put(31, "上海");
	 zoneNum.put(32, "江苏");
	 zoneNum.put(33, "浙江");
	 zoneNum.put(34, "安徽");
	 zoneNum.put(35, "福建");
	 zoneNum.put(36, "江西");
	 zoneNum.put(37, "山东");
	 zoneNum.put(41, "河南");
	 zoneNum.put(42, "湖北");
	 zoneNum.put(43, "湖南");
	 zoneNum.put(44, "广东");
	 zoneNum.put(45, "广西");
	 zoneNum.put(46, "海南");
	 zoneNum.put(50, "重庆");
	 zoneNum.put(51, "四川");
	 zoneNum.put(52, "贵州");
	 zoneNum.put(53, "云南");
	 zoneNum.put(54, "西藏");
	 zoneNum.put(61, "陕西");
	 zoneNum.put(62, "甘肃");
	 zoneNum.put(63, "青海");
	 zoneNum.put(64, "新疆");
	 zoneNum.put(71, "台湾");
	 zoneNum.put(81, "香港");
	 zoneNum.put(82, "澳门");
	 zoneNum.put(91, "外国");
	 }
	
	 final static int[] PARITYBIT = {'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'};
	 final static int[] POWER_LIST = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10,
	 5, 8, 4, 2};
	
	 /**
	 * 身份证验证
	 *@param s 号码内容
	 *@return 是否有效 null和"" 都是false
	 */
	 public static boolean isIDCard(String certNo){
	 if(certNo == null || (certNo.length() != 15 && certNo.length() != 18))
	 return false;
	 final char[] cs = certNo.toUpperCase().toCharArray();
	 //校验位数
	 int power = 0;
	 for(int i=0; i<cs.length; i++){
	 if(i==cs.length-1 && cs[i] == 'X')
	 break;//最后一位可以 是X或x
	 if(cs[i]<'0' || cs[i]>'9')
	 return false;
	 if(i < cs.length -1){
	 power += (cs[i] - '0') * POWER_LIST[i];
	 }
	 }
	
	 //校验区位码
	 if(!zoneNum.containsKey(Integer.valueOf(certNo.substring(0,2)))){
	 return false;
	 }
	
	 //校验年份
	 String year = certNo.length() == 15 ? getIdcardCalendar() + certNo.substring(6,8) :certNo.substring(6, 10);
	
	 final int iyear = Integer.parseInt(year);
	 if(iyear < 1900 || iyear > Calendar.getInstance().get(Calendar.YEAR))
	 return false;//1900年的PASS，超过今年的PASS
	
	 //校验月份
	 String month = certNo.length() == 15 ? certNo.substring(8, 10) : certNo.substring(10,12);
	 final int imonth = Integer.parseInt(month);
	 if(imonth <1 || imonth >12){
	 return false;
	 }
	
	 //校验天数
	 String day = certNo.length() ==15 ? certNo.substring(10, 12) : certNo.substring(12, 14);
	 final int iday = Integer.parseInt(day);
	 if(iday < 1 || iday > 31)
	 return false;
	
	 //校验"校验码"
	 if(certNo.length() == 15)
	 return true;
	 return cs[cs.length -1 ] == PARITYBIT[power % 11];
	 }
	
	 private static int getIdcardCalendar() {
	 GregorianCalendar curDay = new GregorianCalendar();
	 int curYear = curDay.get(Calendar.YEAR);
	 int year2bit = Integer.parseInt(String.valueOf(curYear).substring(2));
	 return year2bit;
	 }
	
	
	
	 public static void main(String[] args) {
	 boolean mark = isIDCard("450981198802261753");
	 System.out.println(mark);
	 }
	
	}

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